It’s same like Tetris, there is no end unless you lose. In the screen below is for the beginner. The Blue line on the left is your time. It will continuously decrease until you can combine four balls with same color. The balls on the top track will move from right to left and go back to the right.

So, the idea is to put 4 balls with the same color in the 4 holesbase. It’s difficult to do it on the top 4 holes because the balls have different color on the queue. But, you can do it through 4 holes-bottom.

Click the 4 holes base to choose.

Click the selected ball using Left mouse button to drop from Top 4 holes-base to Bottom 4 holes-base. Or Left 4 holes-base to the Right 4holes-base and also the opposite.

Toturn the 4 holes-base, just click the 4 holes-base and click Right mouse button to turn it.